Ultrafine calcium hydroxide grinding equipment
By employing a multi-stage grinding structure and a three-stage screening design, the problem of achieving high precision and uniformity in grinding ultrafine calcium hydroxide using existing equipment has been solved, enabling efficient and stable production of ultrafine calcium hydroxide.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YISHUI XINGQUAN BUILDING MATERIALS CO LTD
- Filing Date
- 2025-08-21
- Publication Date
- 2026-08-04
AI Technical Summary
Existing calcium hydroxide grinding equipment lacks a stepped refining process, making it difficult to achieve gradual and thorough grinding of raw materials. Furthermore, the single-stage grinding structure cannot meet the requirements of ultrafine calcium hydroxide for grinding precision and uniformity.
It adopts a multi-stage grinding structure, combining grinding component one and grinding component two. Through the linkage of grinding rollers and the high-speed relative motion of grinding disc, a stepped refining process is formed, and it is equipped with a three-stage screening structure to accurately separate materials of different particle sizes.
It significantly improves grinding precision and material uniformity, increases raw material utilization and equipment stability, and ensures the quality of the final product.
Smart Images
Figure CN224585972U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of calcium hydroxide grinding equipment, and in particular to an ultrafine calcium hydroxide grinding equipment. Background Technology
[0002] With the increasing demands for performance of calcium hydroxide powder materials in the industrial sector, ultrafine calcium hydroxide, due to its advantages such as large specific surface area, high reactivity, and good dispersibility, is finding increasingly widespread application in industries such as rubber, plastics, coatings, and environmental protection. To meet the substantial market demand for ultrafine calcium hydroxide, the development of efficient and precise grinding equipment has become crucial for industry development. This type of equipment requires a rational structural design to process blocky or coarse-grained calcium hydroxide raw materials into uniformly sized ultrafine powders to ensure product quality in subsequent production stages. Therefore, higher technical requirements are placed on the grinding precision, efficiency, and stability of the grinding equipment. In existing technologies, equipment used for grinding calcium hydroxide mostly adopts a single-stage grinding structure, commonly including ball mills and Raymond mills. A ball mill mainly consists of a cylindrical body, grinding media, and a drive unit. Its working principle is that the rotation of the cylinder drives the grinding media to perform throwing, impact, and grinding motions, causing the material to be crushed and ground under the impact and friction of the grinding media. A Raymond mill typically includes a main unit, an analyzer, and a blower. After the raw material enters the main unit, it is pulverized under the squeezing and grinding action generated by the relative movement of the grinding rollers and grinding rings. Simultaneously, under the action of the blower, qualified fine powder is carried into the analyzer for sorting. However, existing single-stage grinding equipment lacks a stepped refinement process, making it difficult to perform gradual and thorough grinding of materials. In ball mills, the movement of the grinding media is difficult to control precisely, easily leading to uneven grinding of materials, with some materials being over-ground while others fail to reach the required particle size. Furthermore, the grinding force distribution between the grinding rollers and grinding rings in Raymond mills is difficult to control, resulting in lower particle size accuracy in the final product, failing to meet the stringent requirements for grinding precision and uniformity in ultrafine calcium hydroxide. Utility Model Content
[0003] To overcome the above shortcomings, this utility model provides an ultrafine calcium hydroxide grinding device, which aims to improve the problems of traditional equipment that adopts a single-stage grinding structure, making it difficult to achieve step-by-step refinement of raw materials, and that a single screen lacks grading and screening functions, making it difficult to accurately separate materials of different particle sizes.
[0004] To achieve the above objectives, the present invention provides the following technical solution: an ultrafine calcium hydroxide grinding device, comprising a support frame, wherein a grinding assembly is disposed on the outer wall of the support frame; The grinding assembly includes a grinding box, a feed hopper fixedly connected to the inner wall of the grinding box, a grinding disc 1 at the bottom of the feed hopper, a grinding disc 2 rotatably connected to the lower surface of the grinding disc 2, a connecting plate 2 fixedly connected to the outer wall of the grinding disc 2, a driven gear rotatably connected to the lower surface of the connecting plate 2, a main gear rotatably connected inside the grinding box, the main gear meshing with the driven gear, a discharge hopper provided on the lower surface of the driven gear, a sealing ring fixedly connected to the lower surface of the discharge hopper, a discharge pipe fixedly connected to the lower surface of the sealing ring, a protective cover 2 on the outer wall of the main gear, a connecting rod 2 rotatably connected to the inner wall of the main gear, a motor 2 fixedly connected to the outer wall of the grinding box, the output end of the motor 2 fixedly connected to the connecting rod 2, a protective cover 3 on the outer wall of the motor 2, and a bracket 2 fixedly connected to the outer wall of the protective cover 3.
[0005] As a further description of the above technical solution: The outer wall of the support frame is provided with a second grinding assembly, which includes a support plate. The support plate is fixedly connected to the upper surface of the support frame. A fixed platform is fixedly connected to the upper surface of the support plate. A protective plate is fixedly connected to the upper surface of the fixed platform. Three grinding rollers are rotatably connected to the inner wall of the protective plate. A connecting rod is fixedly connected to the inner wall of each of the three grinding rollers. A drive wheel is fixedly connected to both sides of the outer wall of the connecting rod. A driven wheel is fixedly connected to both sides of the outer wall of the connecting rod. A driven wheel is fixedly connected to both sides of the outer wall of the connecting rod. A motor is provided on the outer wall of the protective plate. A connecting rod is fixedly connected to the output end of the motor. A protective cover is provided on the outer wall of the motor.
[0006] As a further description of the above technical solution: Four vibration dampers are fixedly connected to the upper surface of the grinding box. A sieve box is fixedly connected to the upper surface of the vibration dampers. A second protective plate is fixedly connected to the outer wall of the sieve box. A first connecting plate is fixedly connected to the outer wall of the sieve box. Support rods are fixedly connected to both sides of the outer wall of the first connecting plate. A bracket is fixedly connected to the outer wall of each of the two support rods. A perforated plate is fixedly connected to the inner wall of the sieve box. A strip screen is fixedly connected to the bottom of the perforated plate. A round hole screen is fixedly connected to the bottom of the strip screen.
[0007] As a further description of the above technical solution: A discharge plate is fixedly connected to one outer wall of the protective plate, and a screening box is fixedly connected to the bottom of the discharge plate.
[0008] As a further description of the above technical solution: The support plate is fixedly connected to the bottom of the second protective cover.
[0009] As a further description of the above technical solution: The outer wall of the driving wheel is meshed with a driven wheel one, and the outer wall of the driven wheel one is meshed with a driven wheel two.
[0010] As a further description of the above technical solution: A bracket is fixedly connected to the outer wall of the grinding box, and the vibration damper is fixedly connected to the upper surface of the grinding box.
[0011] As a further description of the above technical solution: The main gear is fixedly connected to the outer wall of the grinding box.
[0012] This utility model has the following beneficial effects: In this invention, the equipment adopts a multi-stage grinding structure combining grinding component two and grinding component one to form a stepped refining process. The three grinding rollers rotate synchronously under the linkage of the driving wheel, driven wheel one and driven wheel two, which fully squeeze and rub the raw material to achieve preliminary crushing and grinding. The high-speed relative motion of grinding disc one and grinding disc two, through strong shearing and grinding action, processes the material into ultrafine particles, which greatly improves the grinding accuracy and material uniformity. In this invention, the three-stage screening structure of the screening box, combined with the vibration action of the vibration damper, can accurately separate materials of different particle sizes, improve raw material utilization, and ensure the quality of the final product. In terms of power transmission and equipment stability, the meshing transmission of the main gear and driven gear, combined with the protection of the second protective cover, reduces gear wear and jamming, resulting in higher power transmission efficiency. The fixed support of bracket one, bracket two, and support plate provides a stable installation foundation for each component, reduces shaking during operation, and improves the overall stability and service life of the equipment. Attached Figure Description
[0013] Figure 1 This is a three-dimensional structural diagram of an ultrafine calcium hydroxide grinding device proposed in this utility model; Figure 2 This is a schematic diagram showing the two-part structure of the grinding component of an ultrafine calcium hydroxide grinding device proposed in this utility model. Figure 3 This is a partial structural diagram of the grinding component of an ultrafine calcium hydroxide grinding device proposed in this utility model; Figure 4 This is a schematic diagram of the vibrating screen part of an ultrafine calcium hydroxide grinding device proposed in this utility model; Figure 5 This is a structural breakdown diagram of the vibrating screen portion of an ultrafine calcium hydroxide grinding device proposed in this utility model.
[0014] Legend: 1. Support frame 1; 2. Fixed platform; 3. Connecting plate 1; 4. Grinding box; 5. Protective plate 1; 6. Grinding roller; 7. Driven wheel; 8. Driven wheel 1; 9. Driven wheel 2; 10. Connecting rod 1; 11. Motor 1; 12. Protective cover 1; 13. Discharge plate; 14. Feed hopper; 15. Grinding disc 1; 16. Grinding disc 2; 17. Connecting plate 2; 18. Driven gear; 19. Discharge hopper; 20. Sealing ring; 21. Discharge pipe; 22. Protective cover 2; 23. Main gear; 24. Connecting rod 2; 25. Motor 2; 26. Protective cover 3; 27. Support frame 2; 28. Support rod; 29. Protective plate 2; 30. Screen box; 31. Vibration damper; 32. Perforated plate; 33. Strip screen; 34. Round hole screen; 35. Support plate. Detailed Implementation
[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0016] Reference Figure 1 - Figure 3This utility model provides an embodiment of an ultrafine calcium hydroxide grinding device, including a support frame 1, with a grinding assembly 1 mounted on the outer wall of the support frame 1; the grinding assembly 1 includes a grinding box 4, with a feed hopper 14 fixedly connected to the inner wall of the grinding box 4, a grinding disc 15 mounted at the bottom of the feed hopper 14, a second grinding disc 16 rotatably connected to the lower surface of the first grinding disc 15, and a connecting plate 2 17 fixedly connected to the outer wall of the second grinding disc 16. The first grinding disc 15 is fixed to the inner wall of the grinding box 4, and the second grinding disc 16 is located below it and can rotate. The opposing surfaces of the two are usually designed with toothed or grooved structures. When the second grinding disc 16 rotates, it forms a strong shearing and grinding force with the first grinding disc 15, further grinding the screened material to an ultrafine particle size. A driven gear 18 is rotatably connected to the lower surface of the connecting plate 2 17, and a main gear 2 is rotatably connected inside the grinding box 4. 3. The main gear 23 meshes with the driven gear 18. A discharge hopper 19 is provided on the lower surface of the driven gear 18. A sealing ring 20 is fixedly connected to the lower surface of the discharge hopper 19. The sealing ring 20 is fixed between the discharge hopper 19 and the discharge pipe 21 to seal the connection gap between the two and prevent leakage of ultrafine calcium hydroxide powder. The discharge pipe 21 is fixedly connected to the lower surface of the sealing ring 20. The discharge pipe 21 is connected below the sealing ring 20 to guide the ultrafine ground calcium hydroxide product to the collection device. A second protective cover 22 is provided on the outer wall of the main gear 23. A second connecting rod 24 is rotatably connected to the inner wall of the main gear 23. A second motor 25 is fixedly connected to the outer wall of the grinding box 4. The output end of the second motor 25 is fixedly connected to the second connecting rod 24. A third protective cover 26 is provided on the outer wall of the second motor 25. A second bracket 27 is fixedly connected to the outer wall of the third protective cover 26.
[0017] Reference Figure 1 - Figure 5A second grinding assembly is provided on the outer wall of the support frame 1. The second grinding assembly includes a support plate 35, which is fixedly connected to the upper surface of the support frame 1. A fixed platform 2 is fixedly connected to the upper surface of the support plate 35. A protective plate 5 is fixedly connected to the upper surface of the fixed platform 2. Three grinding rollers 6 are rotatably connected to the inner wall of the protective plate 5. A connecting rod 10 is fixedly connected to the inner wall of each of the three grinding rollers 6. A drive wheel 7 is fixedly connected to both sides of the outer wall of the connecting rod 10. A driven wheel 8 is fixedly connected to both sides of the outer wall of the connecting rod 10. A second driven wheel 9 is fixedly connected to both sides of the outer wall of the connecting rod 10. A motor 11 is provided on the outer wall of the protective plate 5. The drive wheel 7 on the connecting rod 10 driven by the motor 11 meshes with the driven wheel 8 on the adjacent connecting rod 10. The driven wheel 8 then meshes with the third connecting rod 10. The driven wheel 2 9 meshes with the grinding rollers 6, and through the gear transmission ratio design, the three grinding rollers 6 form a speed difference or reverse rotation, enhancing the extrusion and shearing effect and improving the coarse grinding efficiency. A connecting rod 10 is fixedly connected to the output end of the motor 11. The connecting rod 10 passes through the inner wall of the grinding roller 6 and is fixed thereto, serving as a power transmission shaft to transmit the torque of the motor 11 to the grinding roller 6, driving it to rotate. Simultaneously, the two ends of the connecting rod 10 are connected to the driving wheel 7, driven wheel 8, and driven wheel 2 9, achieving synchronous linkage of the three grinding rollers 6. A protective cover 12 is installed on the outer wall of the motor 11. Four vibration dampers 31 are fixedly connected to the upper surface of the grinding box 4, and a screening box 30 is fixedly connected to the upper surface of the vibration dampers 31. The screening box 30 is used to classify and screen the coarsely ground material to ensure... The material entering the grinding assembly is of uniform particle size, preventing large pieces of material from directly entering the fine grinding stage and causing insufficient grinding. A protective plate 29 is fixedly connected to the outer wall of the screening box 30. A connecting plate 3 is also fixedly connected to the outer wall of the screening box 30. Support rods 28 are fixedly connected to both sides of the outer wall of the connecting plate 3. A bracket 1 is fixedly connected to the outer wall of each of the two support rods 28. A perforated plate 32 is fixedly connected to the inner wall of the screening box 30. The perforated plate 32 is located at the top of the screening box 30 and has large-diameter through holes on its surface. Its main function is to filter large impurities or insufficiently crushed raw materials after coarse grinding. A strip screen 33 is fixedly connected to the bottom of the perforated plate 32. The strip screen 33 is located below the perforated plate 32 and has strip-shaped mesh holes with a smaller diameter than the perforated plate 32. It is used to sift the material. Secondary screening separates medium-sized particles. A perforated screen 34 is fixedly connected to the bottom of the strip screen 33. The perforated screen 34 is located at the bottom of the screening box 30, with circular holes of the smallest diameter, allowing only materials meeting the particle size requirements to pass through and enter the grinding assembly one for ultra-fine grinding, ensuring the efficiency and precision of subsequent fine grinding. A discharge plate 13 is fixedly connected to the outer wall of the protective plate 5, and the screening box 30 is fixedly connected to the bottom of the discharge plate 13. A support plate 35 is fixedly connected to the bottom of the protective cover 22. A driven wheel 8 is meshed with the outer wall of the driving wheel 7, and a driven wheel 9 is meshed with the outer wall of the driven wheel 8. A bracket 1 is fixedly connected to the outer wall of the grinding box 4, serving as the main support structure for fixing the grinding assembly one and grinding assembly two.Vibration damper 31 is fixedly connected to the upper surface of grinding chamber 4, and main gear 23 is fixedly connected to the outer wall of grinding chamber 4.
[0018] Working principle: First, start motor 11, which drives one of the grinding rollers 6 to rotate via connecting rod 10. Due to the meshing of the driving wheel 7, driven wheel 8, and driven wheel 9, power is transmitted sequentially, causing the three grinding rollers 6 to rotate synchronously. The raw material is crushed and ground under the squeezing and friction of the three grinding rollers 6. The pre-processed material falls into the screening box 30 through the discharge plate 13. The material entering the screening box 30 is then subjected to the vibration of the vibration damper 31, and is sequentially screened by the perforated plate 32, the strip screen 33, and the round hole screen 34. The perforated plate 32 first filters out large impurities or insufficiently ground raw materials, while the strip screen 33 and the round hole screen 34 further separate materials with the required particle size. Unqualified materials can be returned to the grinding assembly 2 for reprocessing. Secondly, the qualified materials are fed into the first grinding assembly through the feed hopper 14 for fine grinding. The second motor 25 drives the main gear 23 to rotate through the second connecting rod 24. The main gear 23 drives the meshing driven gear 18 to rotate, which in turn causes the second grinding disc 16 to rotate relative to the first grinding disc 15. The material is subjected to strong shearing and grinding action in the high-speed relative motion of the two grinding discs and is processed into ultrafine particles. The ultrafine calcium hydroxide particles are discharged through the discharge hopper 19, sealed by the sealing ring 20, and discharged through the discharge pipe 21.
[0019] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An ultrafine calcium hydroxide grinding apparatus comprising a support one (1), characterized in that: The outer wall of the bracket (1) is provided with a grinding assembly. The grinding assembly includes a grinding box (4), with a feed hopper (14) fixedly connected to the inner wall of the grinding box (4). A grinding disc (15) is provided at the bottom of the feed hopper (14). A grinding disc (26) is rotatably connected to the lower surface of the grinding disc (15). A connecting plate (27) is fixedly connected to the outer wall of the grinding disc (26). A driven gear (18) is rotatably connected to the lower surface of the connecting plate (27). A main gear (23) is rotatably connected inside the grinding box (4). The main gear (23) meshes with the driven gear (18). A grinding wheel (18) is provided on the lower surface of the driven gear (18). The discharge hopper (19) has a sealing ring (20) fixedly connected to its lower surface, and a discharge pipe (21) fixedly connected to its lower surface. The outer wall of the main gear (23) is provided with a second protective cover (22). The inner wall of the main gear (23) is rotatably connected with a second connecting rod (24). The outer wall of the grinding box (4) is fixedly connected with a second motor (25). The output end of the second motor (25) is fixedly connected to the second connecting rod (24). The outer wall of the second motor (25) is provided with a third protective cover (26). The outer wall of the third protective cover (26) is fixedly connected with a second bracket (27).
2. The superfine calcium hydroxide grinding device according to claim 1, characterized in that: The outer wall of the support (1) is provided with a grinding assembly (2), which includes a support plate (35). The support plate (35) is fixedly connected to the upper surface of the support (1). A fixed platform (2) is fixedly connected to the upper surface of the support plate (35). A protective plate (5) is fixedly connected to the upper surface of the fixed platform (2). Three grinding rollers (6) are rotatably connected to the inner wall of the protective plate (5). A connecting rod (10) is fixedly connected to the inner wall of each of the three grinding rollers (6). A drive wheel (7) is fixedly connected to both sides of the outer wall of the connecting rod (10). A driven wheel (8) is fixedly connected to both sides of the outer wall of the connecting rod (10). A driven wheel (9) is fixedly connected to both sides of the outer wall of the connecting rod (10). A motor (11) is provided on the outer wall of the protective plate (5). A connecting rod (10) is fixedly connected to the output end of the motor (11). A protective cover (12) is provided on the outer wall of the motor (11).
3. The superfine calcium hydroxide grinding device according to claim 1, wherein: Four vibration dampers (31) are fixedly connected to the upper surface of the grinding box (4). A sieve box (30) is fixedly connected to the upper surface of the vibration damper (31). A second protective plate (29) is fixedly connected to the outer wall of the sieve box (30). A first connecting plate (3) is fixedly connected to the outer wall of the sieve box (30). Support rods (28) are fixedly connected to both sides of the outer wall of the first connecting plate (3). A bracket (1) is fixedly connected to the outer wall of both support rods (28). A perforated plate (32) is fixedly connected to the inner wall of the sieve box (30). A strip screen (33) is fixedly connected to the bottom of the perforated plate (32). A round hole screen (34) is fixedly connected to the bottom of the strip screen (33).
4. The superfine calcium hydroxide grinding device according to claim 2, wherein: The outer wall of the protective plate (5) is fixedly connected to the discharge plate (13), and the bottom of the discharge plate (13) is fixedly connected to the screening box (30).
5. The superfine calcium hydroxide grinding device according to claim 2, characterized in that: The support plate (35) is fixedly connected to the bottom of the second protective cover (22).
6. The superfine calcium hydroxide grinding device according to claim 2, wherein: The outer wall of the driving wheel (7) is meshed with a driven wheel one (8), and the outer wall of the driven wheel one (8) is meshed with a driven wheel two (9).
7. The superfine calcium hydroxide grinding device according to claim 3, characterized in that: The grinding box (4) is fixedly connected to a bracket (1) on its outer wall, and the vibration damper (31) is fixedly connected to the upper surface of the grinding box (4).
8. The superfine calcium hydroxide grinding device according to claim 1, wherein: The main gear (23) is fixedly connected to the outer wall of the grinding box (4).